Valve



J. .A. WIENER oct; 17, 1933.

' VALVE 2 shets-sneet 1 Filed May 28, 1932 Srwentor John G. Wiener.

my@ wma@ Gttorneg Oct. 17, 1933. J, A, WIENER 1,931,048

VALVE Filed May 28, 1932 2 Sheets-Sheet 2 l I Al l 5:.1::1:1] 4b 4' I 7gl f 5 lll l 3 5, a 3 5b 3 l l l vl l 1 I l 1 I I 1| Snventor,k

(Ittorneg Patented Oct. 17, 1933 y UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to a self-cleaning valve designed for controllingthe flow of liquids generally, and has particular reference to valvemeans for regulating the flow of wood pulp and similar semi-liquid andviscous preparations employed in the manufacture of paper, brous wallboard, and like products.

The primary object of the invention is to provide a novel stockregulating valve preferably ofthe simple angular type, to take the placeof the more complicated gate, plug and clapper valves, in common use inpulp and paper mills, which frequently become clogged due to theaccumulations of fibers and other solid constituents of the pulp stock.A further object is to provide such a stock regulator wherein the valveproper is in the form of an inverted, self-draining cup, comprising arelatively long concavoconvex body or barrel, which is concentri'callyand rotatably disposed in a cylindrical chamber or socket, thecorresponding ends of the chamber and valve being open and communicatingfreely with the receiving opening of the valve body, while the oppositeends of both the valve and chamber are closed and disposed in bearingcontact with each other. The' closed end of the valve is preferablyformed with an integral axial spindle or stem, that journals in andprojects beyond an adjacent axial opening of the cylinder; the externalsurfacesof the valve and the internal surfaces of the chamber beingground to effect a close, substantially liquid-tight but workable joint,that requires no packing to prevent escape of the liquid past the valveand through the spindle opening, the valve and its chamber beingdisposed at right angles to one or more outlet or exhaust openings thatmay align with or may be disposed in angular relation to each other, aswell as to the intake opening of the valve casing. A further object isto provide a hollow cylindrical valve having a normally open bottom endthat admits the stock to its interior and having one or more angularlateral apertures or openings located between its ends for the dischargeof pulp that may be supplied to the valve under pressure of a pump; thevalve chamber preferably being formed with similar angular openings withwhich the lateral openings of the valve may coincide when the latter isrotated, and the angular openings of the valve chamber preferably beingarranged substantially concentric to the outlet openings of the casing,whereby the volume of stock passing through the valve may be regulated.A further object is to provide simple manually operable means connectedwith the valve spindle for rotating the valve in opposite directions,and also means to indicate the operative movements of the valve. And afurther object is to generally simplify and improve the construction,arrangement and .operation of stock-regulators of the class, to the endthat the dispensing valves may be self-draining and require neitherpacking nor lubrication when employed for dispensing pulp and similarsemi-liquid stocks, and wherein the interiors of the valve, valvechamber and casing are severally so fashioned as to obviate allcavities, pockets or obstructions that may retard the flow or becomeclogged with sediment or accumulations of the solid constituents of thesaid stocks and thereby rendered inefficient and inoperable.

I attain these objects by the means set forth in the detaileddescription which follows, and as illustrated by the accompanyingdrawings, in which- Figure 1 is a central vertical section through anangle valve, taken on line l--1 of Fig. 2. Fig. 2 lis an end elevationof the same. Fig. 3 is a horizontal section, taken on line 3--3 of Fig.2, showing the valve open as in Figs. l and 2. Fig. 4 is a top plan Viewof a straight valve, the axis thereof being vertical instead ofhorizontal to avoid crowding of the figures. Fig. 5 is an Velevationalview of the inverted cup-shaped valve of Figs. 1, 2 and 3. Fig. 6 is abroken side elevation of the straight valve corresponding to Fig. 4.Fig. 'l is an end elevation of the same, taken in the direction of thearrow in Fig. 6. Fig. 8 is an elevational view, a modification of theangle valve of Fig. 1. Fig. 9 is respectively a side and an endelevation of the worm. Fig. 10 is respectively a plan and a centralvertical cross-section of a normal worm gear, the section being taken online 10-10 of the plan view. And Fig. 11 is a brokenelevation andpartial central section of the worm shaft and hand Wheel.

In the drawings, referring particularly to Figs. 1, 2 and 3, 2represents an angular valve body having its bottom formed with an intakeopening 2', that coincides with a cylindrical valve chamber 2a, andthrough the latter connects with an angular outlet opening 2b, the saidopenings being fitted with pipes 2c-2d. 3 represents the cylindricalinverted cup-shaped valve, by which the flow of liquid pulp or otherstock may be regulated. Valve 3 has a normally open bottom end 3 thatreceives the stock from the inlet 2', and a closed top end 3a which isformed with an integral axial spindle or stern 3b, that Journals in anopening 2e of lthe casing that coincides with the axis of the chamber2a.

The stem 3b extends beyond the casing, and its top end is reduced andthreaded to receive a mutilated worm gear 4 and a retaining nut 4'. Thegear 4 is preferably rotated by a worm 5, which is keyed on a shaft 5that is supported by integral perforated lugs 5a,'which rise from thecasing 2, the said shaft being fitted with a hand-wheel 5b. 'I'he topface of the gear 4 is formed with a segmental scale 4a, which istraversed by a pointer 4b, by which predetermined opening and closingmovements of the valve 3 may be indicated (see dotted lines in Figs. 2and 8). The rotary movements of gear 4 may be limited to the extent ofthe scale 4a by a stop 4.1:, shown in Figs. 4 and 7. The valve 3 isprei'- erably formed with a medial diamond-shaped opening 3c for thedischarge of the pulp or other "stock towards the outlet passage 2bwhose inner end comprises a portion of the wall of chamber 2a, and isformed with a corresponding diamondshaped opening, as 2f (see Figs. 1,2, 3, 7 and 8). In practice, 'the vertical, and horizontal or topsurface of chamber 2a, and also the corresponding surfaces of valve 3,are preferably ground so as to eil'ect a substantially close,liquid-tight joint between the parts, whose clearance does notexceed oneor two thousandths of an inch. 'I'he spindle 3b and its bearing 3m arealso ground so as to prevent wobbling or vibrations of the valve andleakage of the said joint. When the said parts are `properly ground, thejoints between the valve and its stem and the casing 2 are practicallyair-and-liquid-tight, and the valve therefore, needs no packing. Owingto the relatively close iitting of the valve 3 and its stem 3', none ofthe water or other thinning liquid of the pulp can reach or enter thenormal space between the top of the valve and the top of the chamber 2a,due to the presence of atmospheric pressure in this dead-end of saidchamber. Further more, such danger is greatly lessened by reason of thepulp being delivered to the valve 3 under considerable pressure, whichthrusts and holds the closed top-end of the valve tightly against thetop of the chamber 2a and prevents escape of any of the stock as long asthe said pressure is maintained by the stock pumps.

Fig. 8 illustrates an angular valve 6, having two outlets, as 66a, whichmay be served with the pulp stock alternately by a simple valve, as 3,having a single discharge opening, as 3c. In` case it is desired tosimultaneously dispense the pulp towards both ofthe outlets 6-6a, thevalve may\be provided with two oi.' the angular openings 3c, as may beunderstood by consulting Figs. 1 and 5.

The straight valve 7 of Figs. 4, 6 and '7 may receive the stock ateither of its ends, 7'-7a, and the valve proper, as 7b, shown in Fig. 7,may be provided with a single opening (not shown) and so adjusted as tocontrol the flow of the stock in they same manner as in the angle valve2. The straight valve-body 7. has a bottom opening '7c merely for thepurpose of facilitating the insertion of the valve 7b, after which saidopening is preferably sealed by a cap or plug 7d. Fig. 7 shows the'valve7b closed.

In practice, the operating mechanisms for the simple angle valve 2, andthe modifications of Figs. 6, 7 and 8, may be identical as shown in thedrawings. The cup-shaped valve 3, shown in Figs. 1, 2, 3 and 5,possesses certain of the characteristics of. the well-known plug valvein common use, but so far as I amaware, none of these older plugs havebeen successfully applied to angular valves, vas herein shown.

Having thus described my invention, what I l claim, is-

A valve for use with pulp stock including a body formed with acylindrical valve chamber having a closed and an open end and having anoutlet at one side thereof communicating with the chamber, said closedend having a bearing 1-10 which terminates beyond the closed end, avalve in the chamber having a spindle extending through the bearing, amutilated worm gear secured to the spindle and seated against the .outer`end of the bearing, a worm carried by the casing and in mesh. with theworm gear, a stop member secured to the outer face of the closed end andprojecting outwardly therebeyond and formed to engage the ends of themutilated gear to restrict movement thereof in both directions, saidworm gear having indicia open" at one end thereof and having indiciaclosed adjacent the opposite end of the worm gear, and a pointer securedto the closed end of the casing and disposed in overlying relation tothe worm gear to indicate the open and closed position of the valve.

JOHN A. WIENER.

